The Siemens 3VA1463-6EF32-0AA0 is a SENTRON molded case circuit breaker (MCCB) designed for line protection in industrial distribution panels. It carries a continuous current rating of 630 A at 40 °C to 50 °C without derating — that's the full frame rating available across typical switchroom ambient temperatures, so you don't need to oversize the frame for a warm panel. At 55 °C it still delivers 618 A, and at 70 °C it holds 583 A. Breaking capacity is 220 kA at 240 V, 154 kA at 415 V and 440 V, 121 kA at 500 V, and 17 kA at 690 V. Those numbers tell you this breaker handles high-fault-current scenarios — think large transformer secondaries or industrial mains — without needing an upstream current-limiting fuse.
Overcurrent release and construction
The overcurrent release is a TM240 — a thermal-magnetic type with a fixed thermal pickup and magnetic trip calibrated for the 630 A frame. It's a 3-pole unit with no undervoltage release, no trip indicator, and no communication function. Insulation voltage is rated 800 V, and the front face carries IP40 protection — fine for a clean indoor panel, not for washdown areas. Power loss at full rated current is 192.9 W maximum. That's the heat you need to vent inside the enclosure — factor it into your thermal budget if you're packing multiple breakers in a single cabinet.
Dimensions and mounting
The breaker measures 248 mm high, 138 mm wide, and 110 mm deep. That 110 mm depth is the dimension that matters for gland-plate clearance and back-panel wiring — it fits standard 400 mm deep enclosures with room for cables behind the mounting plate.